Analysis of Failure Characteristics and Strength Criterion of Coal-Rock Combined Body with Different Height Ratios

Figure 11

Failure patterns of coal-rock combination and the coal and rock samples under different confining pressures; from left to right, the confining pressures are 0 MPa, 5 MPa, and 10 MPa for each group of pictures. (a) Coal. (b) Rock. (c) RCB-2-1. (d) RCB-1-1. (e) RCB-1-2. (f) RCB-1-3.

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